IDW has given us an exclusive sneak peek of the fourth and final issue of their monster mash miniseries Infestation: Outbreak. The issue hit stands Wednesday, October 12. Here's the solicitation from IDW:

Infestation: Outbreak #4 (of 4)Chris Ryall & Tom Waltz (w) o David Messina (a) o Davide Furno (c)
There's action comics... and then there's REAL action comics! The @#$% hits the fan in a big way as the next stage of the IDW universe blasts off! Bools & company find Cross, meaning it's time for some old-fashioned CVO brand ass-kicking. Fortunately there's a whole mess of aliens, demons and ugly in-laws who need just that! With this concluding issue, you know there're going to be some big surprises... and this issue is no exception. Kiss kiss bang bang!